So I am getting my M80's soon. I have a friggin Pioneer VSX-1525-K ( sc-32 equiv. ) long story, but that's what I got class D amp.I am also narrowed down my options, to the three in the subject.Mainly, for movies, but an starting to watch Music video's.

So, wonder which is the better one as I've read Class A or A/B is best for Music. Class D if I am using for a PA system, which is not the case.

If you're planning on sitting in the same room as your M80's and don't have crazy friends who think clean sound means they should turn it up until there is distortion, you shouldn't need an amp.I was told so many times and didn't believe it.I did purchase a 4 channel ADA1000 because I wanted to.We do listen to loud music while outside of the room and we have remote hungry friends who know how to party.Most of the time we wouldn't come close to using the power in my receiver which has similar specs.There are times when my HT gets used at close its potential and its nice to know we have some headroom on all channels when we need it.Its over kill 99.9% but...

Troy, the first suggestion would be that the present consideration of any of those units is premature. When you get your M80s and set them up with your Pioneer you may find that it's more than sufficient.

Some of the stuff you read sounds like utter nonsense from someone not very knowledgeable about amplifier technology. The bottom line is whether the unit puts out enough voltage for the required maximum sound level with the speaker being used, does so with flat response over the audible range, and with inaudibly low noise and distortion. That's it; "class" can't change this. In particular, the statement about class D being for a PA system is absurd.

Troy, no it's not true if the comparison was done with other factors being held equal, so that a false impression isn't given. In particular, if the volume level was precisely the same(not just the same setting on the volume control, which can result in different sound levels with different amplifiers), there's nothing that can in reality produce greater "detail...clarity", etc. If enough voltage is being output by the amplifier in the receiver for the sound level in question, that's all that can be done.